Terror T.R.A.X. was a series of interactive audio games published by Wizards of the Coast. In the games, the listener plays the part of a T.R.A.X. (Trace, Research, Analyze, and eXterminate) operatives who investigates mysterious events. At the end of each audio track, the listener selects the next corresponding track based on the choices that are given. Four titles were originally released on compact disc in 1994 and 1995, the audio files for Track of the Vampire and Track of the Werewolf are now available for free as Real Audio files which can be selected through an HTML menu. The last two tiles, Track of the Mummy and Track of the Creature remain out of print.